Improvement in cultivators



J. CROWTHER.

Cultivator.

- Paten ted March 3, 1868.

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Letters Patent-Na. 75,127, dated [ll arch 3, 18 68.

IMPROVEMENT IN UULTIVATORS.

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TO ALL WHOM IT MAY CONCERN;

Be it'known that I, JOHN CROWTHER, of Ogrford, in the county of Oakland,and in the State of Michigan, have invented certain new and usefulImprovements in Cultivators; and do hereby declare that the following isa. full, clear, and exact description thereof, reference being had tothe accompanying drawings, and to the letters of reference markedthereon.

In the annexeddrawings making part of this specification, A Arepre sentthe'framo of the machine, theforward end of which is supported upon anaxle, K, which is provided with two wheels, and the rear end beingsupported upon a crank-axlgflwhich is also provided with two wheels. M Mrepresent cultivator-teeth, whichare secured-inproper order to the underside of the cross-pieces of the frame: To the centre of thocrank-axle Bis secured a lever, D. v E represents a supplementary lever, which ispivoted to lever D, having a spring to throw its upper end awayfrom thelever D, and having a pin on its lower end, which takes into a hole in aloop q. The loop a is secured to one side of lever D,'and a curved bar,0, with one end securedto cross-piece P, and the other to thecross-piece R passes through loop a. The curved bar C is provided withhole's as seen, and the pin upon lever E, passing the hole in loop a,takes into one of the holes of this bar 0, and thus stations the leverD, and'with it the axle B, in any desired position. I

J represents a shaft, which stands in' a vertical position, and thelower end of which is made fast to the axle K. "This shaft passesthrough and has bearing in two plates, 0 and cl,wliich are secured rtethe forward end of the frame, as seen. L represents a clevis, which issecured permanently to the shaft J. F represents a connecting-bar, oneend of which is pivoted to lever D, and the other to a lever, H. Thelever'H has its fulcrum.-

upon the arm of a-coll'ar,g, which said collar surrounds and is securedto the upper ,end of shaft J. I represents a bar, one end of which ispivoted tothe forward end of lever H, and the other, to the outer endofplate e.

The object of this arrangement is to raise and lower the frame A,withits teeth, atthe will of the operator,

whor'ests upon the seat S, at the roar of the frame: When the operator,who sits back of lever D, drnws said iever,toward.him,.he turns the axleB in such a manner as to-raise the rear' of the framefwhile heat thesame time draws the bar F, so as to throw up the forward end of lever H,and, by means of bar I, to raise the forward end of the frame, theshaftJ taking an endwise movement downward through the plates d and e.

The two axles, K and B, are time so connected that hya movement of thelever D they are both acted upon atthe same time, and the frame israised orlowerecl at the will of the opcrator as themature of the casemay demand. The lever D is stationed at any desired point by-uieans ofthe pin on the lower end of lever E.

Having thus fully described my invention, what I cll'iim as new, anddesire to secure by' Letters Patent, is

Raising and lowering the frame A by mennsof levers D and H, and bars 0,F, and I, and shaft J, substantially as herein specified. v

In testimony that I claim the foregoing, I have hereunto set myhand,this 5th day of July, 1867.

I JOHN GBOWTHER.

Witnesses:

' L. W. STANTON,

Jos. A. TREAT- o

